Question
In: Mechanical Engineering
Air at 30 C flows at 10 m/s across an in-line tube bank consist of 5...
Air at 30 C flows at 10 m/s across an in-line tube bank consist of 5 rows with 10 tubes per row. The diameter of the tube is 5 cm and the tube pitch is 13 cm. Water flowing in tube maintains the tube surface temperature at 80C find the following:
a) the air temperature at the outlet of the tube
b) the convective heat transfere per unit length per tube to the air
( it is heat transfer problem )
Solutions
samet mamat answered 3 years agoRelated Solutions
Air flows through this tube at a rate of 1400cm3/s . Assume that air is an...
Air flows through this tube at a rate of 1400cm3/s . Assume that
air is an ideal fluid.
What is the height h of mercury in the right side of
the U-tube?
Air at 25°C flows over a 10-mm-diameter sphere with a velocity of 20 m/s, while the...
Air at 25°C flows over a 10-mm-diameter sphere with a velocity
of 20 m/s, while the surface of the sphere is maintained at 75°C.
What is the rate of heat transfer from the sphere? q = ___ W ?
Please provide correct final answer for guaranteed
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Air at 20°C and a velocity of 8 m/s flows over the 4-m length of a...
Air at 20°C and a velocity of 8 m/s flows over the 4-m length of
a 4-m wide single surface of a square plate whose temperature is
80°C. (For properties of air, use k = 0.02735 W/m·K, Pr = 0.7228, ν
= 1.798 x 10-5 m2 /s ) Given the above information, do the
calculations to answer the two MC questions below. Please clearly
show/discuss your solution method and calculations. A.
__________The rate of heat transfer, Q̇ , from this...
Cold air at a temperature of 10 C and a velocity of 3 m/s is moving...
Cold air at a temperature of 10 C and a velocity of 3 m/s is
moving parallel to a flat plate with a length of 6 m and a surface
temperature of 75 C.
A) Find the transition location on the plate and the heat loss
from the plate.
B) Repeat part (A) for water at the same velocity and
temperature. The flat plate is made from copper.
Air flows into a commercial steel pipe of 5 cm ID at 70 m/s. The inlet...
Air flows into a commercial steel pipe of 5 cm ID at 70 m/s.
The inlet pressure and temperature of the air are 1 MPa and 100?C,
respectively.
a) Determine the Mach number at a distance 60 m down the pipe
if the flow is adiabatic.
b) Calculate the temperature at the same point. How would you
comment on the assumption of
constant Re, hence constant f, along the pipe by considering
the temperature variation?
Cold air at temperature of 10 C and velocity of 3 m/s is moving parallel to...
Cold air at temperature of 10 C and velocity of 3 m/s is moving
parallel to a flat plate with the length of 6 m and surface
temperature of 75 C. A) Find the transition location on the plate
and the heat loss from the plate. B) Repeat part (A) for water at
the same velocity and temperature. The flat plate is made from
copper.
Cold air at temperature of 10 C and velocity of 3 m/s is moving parallel to...
Cold air at temperature of 10 C and velocity of 3 m/s is moving
parallel to a flat plate with the length of 6 m and surface
temperature of 75 C. A) Find the transition location on the plate
and the heat loss from the plate. B) Repeat part (A) for water at
the same velocity and temperature. The flat plate is made from
copper.
Air at 20°C and 1 atm flows over a spherical object at 1 m/s. The sphere...
Air at 20°C and 1 atm flows over a spherical object at 1 m/s.
The sphere has a diameter of 10mm and its initial temperature is
134°C. If the density, specific heat, and conductivity of the
sphere are 7832 kg/m”, 549 J/kg.K, and 49.2 W/m.K, respectively,
calculate the temperature at the center of the sphere after 100
seconds.
Air at 10°C and I atm flows over a flat plate (30 cm x100 cm) at...
Air at 10°C and I atm flows over a flat plate (30 cm
x100 cm) at 20 m/s. The plate is maintained at 70°C. (a) calculate
the boundary layer thikness at distances of 30 cm and 100 cm, (b)
calculate the heat transfer from first 30 cm and from whole the
plate.
The inner tube of atyer contains18 litres of air at atemp of 10 c and apressure...
The inner tube of atyer contains18 litres of air at
atemp of 10 c and apressure of 1.616×100000 if we heat thetube to35
c its volume increases to19 litres what will be the pressure
then?
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